本文整理匯總了VB.NET中System.Net.DownloadDataCompletedEventArgs類的典型用法代碼示例。如果您正苦於以下問題：VB.NET DownloadDataCompletedEventArgs類的具體用法？VB.NET DownloadDataCompletedEventArgs怎麽用？VB.NET DownloadDataCompletedEventArgs使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。
在下文中一共展示了DownloadDataCompletedEventArgs類的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: DownloadDataInBackground
' Sample call : DownLoadDataInBackground ("http:' www.contoso.com/GameScores.html")
Public Shared Sub DownloadDataInBackground(ByVal address As String)
Dim waiter As System.Threading.AutoResetEvent = New System.Threading.AutoResetEvent(False)
Dim client As WebClient = New WebClient()
' Specify that the DownloadDataCallback method gets called
' when the download completes.
AddHandler client.DownloadDataCompleted, AddressOf DownloadDataCallback
Dim uri as Uri = New Uri(address)
client.DownloadDataAsync(uri, waiter)
' Block the main application thread. Real applications
' can perform other tasks while waiting for the download to complete.
waiter.WaitOne()
End Sub示例2: DownloadDataCallback
Private Shared Sub DownloadDataCallback(ByVal sender As Object, ByVal e As DownloadDataCompletedEventArgs)
Dim waiter As System.Threading.AutoResetEvent = CType(e.UserState, System.Threading.AutoResetEvent)
Try
' If the request was not canceled and did not throw
' an exception, display the resource.
If e.Cancelled = False AndAlso e.Error Is Nothing Then
Dim data() As Byte = CType(e.Result, Byte())
Dim textData As String = System.Text.Encoding.UTF8.GetString(data)
Console.WriteLine(textData)
End If
Finally
' Let the main application thread resume.
waiter.Set()
End Try
End Sub